Renamed Extendable to Extend

In order to upgrade, simply rename the Extendable trait to Extend in
your code

Part of #18424

[breaking-change]

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libsyntax/util/small_vector.rs b/src/libsyntax/util/small_vector.rs
index 56ee6c7b915..8aba0014e97 100644
--- a/src/libsyntax/util/small_vector.rs
+++ b/src/libsyntax/util/small_vector.rs
@@ -33,7 +33,7 @@ impl<T> FromIterator<T> for SmallVector<T> {
     }
 }
 
-impl<T> Extendable<T> for SmallVector<T> {
+impl<T> Extend<T> for SmallVector<T> {
     fn extend<I: Iterator<T>>(&mut self, mut iter: I) {
         for val in iter {
             self.push(val);